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BORON-LINED IONIZATION CHAMBER [2 records]

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Filter results by subject field

Alphabetical list of terms

Record 1 2008-12-12

English

Subject field(s)
  • Scientific Instruments
  • Atomic Physics
  • Nuclear Fission Reactors
CONT

The boron-lined compensated ionization chamber is a differential chamber formed by three electrodes which define two elementary chambers. The first elementary chamber is located between the positive high voltage polarization electrode and the signal electrode which collects the charges developed by ionization in the gas. The surfaces of the electrodes of this elementary chamber are covered with a boron lining. This elementary chamber is therefore sensitive to neutrons and to gamma rays.

French

Domaine(s)
  • Instruments scientifiques
  • Physique atomique
  • Réacteurs nucléaires de fission
DEF

[...] chambre différentielle constituée de deux chambres élémentaires polarisées en opposition.

OBS

L'une est sensible aux neutrons et aux gamma et l'autre aux seuls gamma. Les deux courants obtenus se soustraient et le courant résultant ne comporte qu'une faible composante due aux gamma, il est donc proportionnel à la puissance du réacteur. La dynamique de mesure d'une chambre d'ionisation compensée est très importante. Son domaine de fonctionnement se recouvre avec celui d'un détecteur impulsionnel travaillant aux faibles niveaux.

Spanish

Save record 1

Record 2 2008-10-20

English

Subject field(s)
  • Analytical Chemistry
  • Atomic Physics
  • Radiation Protection
CONT

A neutron detection device is housed in a metal enclosure containing a first detector with a high-sensitivity fission chamber, and a second detector having a low-sensitivity fission chamber, and a boron-lined ionization chamber compensated for gamma radiation. The detection device is useful for extended range measurement of the neutron fluence rate outside the core of a nuclear reactor.

Key term(s)
  • boron-lined ionisation chamber

French

Domaine(s)
  • Chimie analytique
  • Physique atomique
  • Radioprotection

Spanish

Save record 2

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